Developing Solar Projects CARES Conference 2019 Assessing buildings - - PowerPoint PPT Presentation

Developing Solar Projects

CARES Conference 2019

Assessing buildings for Solar PV

Ben Whittle, Welsh Government Energy Service (EST)

What are you trying to achieve?

Maximum generation possible? 100% provision plus export? “Reasonable” cover of consumption and minimal export? Will you be adding more electricity consuming equipment later (heat pumps,

What are you trying to achieve?

What are you trying to achieve?

What are you trying to achieve?

Small sites – very straightforward Mostly limited by roof size or grid connection (And profitability) Large sites – can be more complicated Export limitation, Constraints, profitability

What are you trying to achieve?

Small sites – schools, community centres etc Generally you will want to fill the roof up as the more you install the better value for money you get You will probably be restricted to the statutory limits especially in very rural areas. Commercial supplies are rare, so typically 4kW max.

What are you trying to achieve?

Large sites – can be more complicated Constraints Export limitation EV Charging Heat pumps profitability

Why can’t I have nice things?

Why can’t I have nice things?

This is called the Low Voltage network – Generally the longer the distance from the transformer the smaller the capacity available

Why can’t I have nice things?

In a domestic scenario (single phase: house, small school, office etc) this cable is generally 16mm2 and can carry about 100 amps, protected by a 60 or 80amp fuse. In a commercial scenario you get 3 cables and triple the system size is possible without “reinforcement” (replacing equipment such as cables or transformers) For technical reasons it’s not possible to let everyone connect large systems without placing strain on the Low Voltage network– it’s also not “fair” – every new installation takes a little of the capacity in the area away.

Sweet spots to keep life simple – Fit & Inform

Statutory limits for “Fit and inform” no requirement to seek permission at ≤3.68kW per phase Domestic (single phase)– up to 4.5kW Solar panels connected to a 3.68kW inverter Commercial (3Phase)– up to 12.5kW Solar panels connected to a 10kW inverter

Sweet spots to keep life simple – 30kW

<30kW no export meter was required assumed you will self-consume 50% of electricity – this can work out well in low occupation buildings such as schools or village halls. >30kW you needed to measure both import, generation and export, and there is a cost implication to this with additional meter charges. Where you want to install multiple systems in a tight geographical area you need to speak to your DNO as soon as is practical to avoid complications!

The Smart Export Guarantee

BEIS mandates that larger electricity suppliers offer small-scale generators a price per kWh for the electricity they export to the grid. Smaller suppliers can opt to voluntarily provide a SEG tariff but must adhere to the rules and guidance associated with the SEG – applies to producers up to 5MW;

• Suppliers would determine the tariff per kWh for remuneration How much?
• Suppliers would be obliged to provide at least one export tariff;
• Electricity exported to the grid from eligible generators must be metered

The government is hoping that this will encourage more battery storage on the grid, reducing strain In theory it might also mean reducing output from solar systems at times of high production – will this affect small and large producers equally? RESULTS OF CONSULTATION EXPECTED IN SUMMER TIME

The Smart Export Guarantee

Small operators to Large operators

The Smart Export Guarantee

Assessing buildings – Google Earth

You can use Google Earth for free, and you can measure things to an accuracy of around +/- 50 cm

Assessing buildings – Google Earth

Be aware that the overhead imagery is

• ften dated and 2 dimensional so you

may miss details like: Extensions Roof covering and age Shading objects like trees and

Assessing buildings – Google Earth

Using simple rules of thumb you can quickly work out rough capacities Depends on pitch of roof: Pitched roofs are about 8-10msq per 1kW Flat roof has much lower density. You normally need to leave a good

Assessing buildings – using Sketchup

You can use Trimble Sketchup for free There also free “plug-ins” that can help you automatically insert solar

• panels. In this case I have

used one called “Skelion” Very quick – you can do a simple building in less than 5 minutes Only sensible to do initial summaries, you need to get

Assessing buildings – using Sketchup

Assessing buildings – using Helioscope

Assessing buildings – using Helioscope

Assessing buildings – Roof types

Flat – asphalt, felt, membrane GRP Corrugated fragile sheeting Slate Tile Steel profile

Cos t

Materials & Time Time and safety Time Speed & materials

Assessing buildings – Flat roofs

Structural strength – ballast can weigh a lot (esp. in windy coastal areas) and it takes a lot of time to move Roof penetrations should be avoided for weather protection Warranties may be voided on new GRP / Membrane roofs (avoidable) Edge protection can be pricy Future cleaning costs may be increased due to access issues / low angle panels

Assessing buildings – Flat roofs

Structural strength – Weak and fragile: numerous deaths and serious injuries in the solar industry Replacement often wise as they are typically also very old and in poor condition Incredibly time consuming to install – double the “normal” allowance Framing costs increase

Assessing buildings – fragile roofs

Assessing buildings – fragile roofs

Structural strength – Slate roofs were never designed for extra Tend to be older buildings / weaker roofs Spare materials required as slates inevitably break Incredibly time consuming to install – double the “normal” allowance Framing costs increase

Assessing buildings – slate roofs

Assessing buildings – slate roofs

Super quick Very low framing costs Reduce wind lift issues 200kW in 4 days easily achievable

Assessing buildings – steel profile roofs

Choose buildings with 3 phase power supplies where possible Find the biggest buildings with the easiest roofs to work

• n

Use buildings with high electrical consumption to improve profitability Consider adding EV charging or heat pumps (additional RHI income) to increase electrical use which you can self consume or sell

Assessing buildings – Summary

CARES Conference 2019 – developing solar projects Edinburgh Community Solar Coop

Richard Witney – Project Manager

PV system locations

ww.edinburghsolar.coop/projects/solar-panel-locations/

The installations

BUILDING kWp kWh/yr CO2/yr (T) AINSLIE PARK LEISURE CENTRE 100 81,849 41 BLACKHALL PRIMARY SCHOOL 15 10,876 5 BUCKSTONE PRIMARY SCHOOL 100 67,663 34 CAMERON HOUSE COMMUNITY CENTRE 20 16,290 8 CANAL VIEW PRIMARY SCHOOL 100 81,417 41 CARRICKNOWE PRIMARY SCHOOL 50 40,326 20 CARRICKVALE COMMUNITY CENTRE 30 25,166 13 CLERMISTON PRIMARY SCHOOL 21 17,705 9 CRAIGHALL DAY 30 24,059 12

CRAMOND PRIMARY SCHOOL

CURRIE HIGH SCHOOL 133 98,843 49 CURRIE PRIMARY SCHOOL 45 35,337 18 DAVIDSONS MAINS PRIMARY SCHOOL 35 29,087 15 DEAN PARK PRIMARY SCHOOL 83 65,752 33 DRUMBRAE LEISURE CENTRE 50 40,911 20 EAST CRAIGS PRIMARY SCHOOL 50 41,639 21 GYLEMUIR PRIMARY SCHOOL 30 25,343 13 LIBERTON PRIMARY SCHOOL 45 37,229 19 OAKLANDS SPECIAL SCHOOL (NEW) 125 106,206 53 PROSPECT BANK SCHOOL 35 28,366 14 RATHO PRIMARY SCHOOL 70 54,546 27 REDHALL MLD PRIMARY SCHOOL 50 38,847 19 TUMBLES AT PORTOBELLO 125 102,647 51 WARDIE PRIMARY SCHOOL 30 21,748 11 WOODLANDS SCHOOL MLD 20 14,857 7 TOTALS 1,390 1,106,709 554

Project partners

• ECSC board – community benefit society
• CEC Energy Team
• Edinburgh Leisure
• Emtec Energy – project manager, designers, 2 x Roofing

Teams, 2 x Electrical Teams, structural engineer, scaffolding contractor

• Schools – HTs, teachers, business managers, FM, SSSO, SSO,

children

• ECSC Shareholders
• ECSC PM

Financials

Feed in tariff & export rate:

• Up to 50 kW = 11.71p/kWh (4.32p)
• Between 50 kW & 150 kW = 9.98p/kWh (1.99p)
• Export rate = 4.91p/kWh
• Paid for 20 years
• Indexed linked (April 2017)
• Phase 2 of project – 11 buildings awaiting pre accreditation to FiT <50kW

Building selection

• Electrical use on site – any export expected?
• How the building is used all year? – school/community centre/leisure centre
• Ongoing access
• Age of building – future maintenance or developments nearby
• Ease of access for installation
• Type of roof – slate/tile/metal/flat
• Good on going relationship with building managers/facility team

Contractor selection

• MCS & RECC certified
• Initial design support – size, generation, financial feasibility
• Availability and communication
• Understanding your community
• Support with building warrants, planning permission, structural designs
• Installation teams – in house or subcontractors
• Health & Safety
• Final handover – explanation of system & supporting O&M documents

The equipment – warranties

• Seraphim 260W polycrystalline panels – 10 years warranty
• Fronius Inverters – 10 years warranty
• Solis Inverters – 10 years warranty

Installations – Oaklands 125kWp

Installations – Currie HS 133kWp

Installations – Davidson’s Mains PS 35kWp

Installations – Ratho PS 70kWp

Monitoring

Preventative & reactive maintenance

• Preventative maintenance – electrical & mechanical
• MCS – www.microgenerationcertification.org
• Solar Trade Association – www.solar-trade.org.uk
• Reactive maintenance – work with a contractor who understands your

community

• Remote monitoring of solar PV
• Information for community group / building users

Further support

• Local Energy Scotland – www.localenergy.scot
• Energy4All – work with your community to develop your project
• Jim Lee (Project Officer – Scotland) Email: jim@energy4all.co.uk

Mob: 07834 834 657

• Resource Efficient Scotland – www.resourceefficientscotland.com

Contact Details

Richard Witney On Site Generation Ltd Midlothian Innovation Centre Roslin EH25 9RE 0131 448 1536 richard.witney@onsitegeneration.co.uk

www.climatechallengefund .org

SEED TO WOK

SHIMCA is recognised as a Scottish Charity Scottish Charity Number- SC036187 Incorporated in Scotland as a Company Limited by Guarantee Company Number-SC 537692

Shimca www.shimca.weebly.co m Shimca.org.uk@gmail.co m

www.climatechallengefund.org

The Climate Challenge Fund

The Climate Challenge Fund is a Scottish Government grant programme that provides funding and support for community-led organisations to run projects that reduce local carbon emissions, helping to tackle climate change. Since it was launched in 2008 the CCF has funded 986 projects including:

• energy efficiency improvements to community owned buildings and

home energy efficiency advice

• lower carbon travel options
• community growing initiatives
• schemes to tackle waste

www.climatechallengefund.org

Training and support

Keep Scotland Beautiful manages and administers the Climate Challenge Fund on behalf of the Scottish Government. Keep Scotland Beautiful has staff that support CCF applicants and those awarded grants. Keep Scotland Beautiful also offer free training, events and support to help communities across Scotland build their capacity to tackle climate change. www.keepscotlandbeautiful.org/ccf

www.climatechallengefund.org

A Community Growing & Healthy eating project where people will grow food, develop skills for a sustainable community and address energy efficiency measure and tackle fuel poverty faced by our

• community. Seed to Wok will share cultural values at the same

time tackling climate change to reduce its impact on the quality of lives of our community in the Highlands & Moray. The legacy of our project:-

• Our Multicultural Centre providing drop in sessions for energy

advice, climate change information and food waste advice

• The community will benefit long term from energy home audits

provided by trained adviser from Home Energy Scotland and an interpreter

• Creating an environmental friendly outdoor shelter for

“SEED TO WOK” - The project

www.climatechallengefund.org

PICTURE DIARY

Ground Work Day 1 – 28th June 2017 Lunch at

• ur Eco

Café

PICTURE DIARY

Ground Work Day 2 – 29th June 2017 End of Day 2 – 4 Raised

PICTURE DIARY

Ground Work Day 3 – 3rd July 2017 The Groundwo rk Team

PICTURE DIARY

Planting Day 1 – 10th July 2017 Senior members brought seedlings from their own back gardens and show our younger members how to plant and care for them

PICTURE DIARY

Terrace Raised Bed – Children Herbs Garden 2 Green Flag Primary Schools will be learning how to grow Chinese Vegetables from our Community Gardener Thomas Lacroix after the Easter holidays and then they will take ownership of

• ne of the raised beds.

PICTURE DIARY

Crown Primary School P7 pupils helped to decorate and paint shapes of lotus flowers which will then be attached to our Garden fence.

PICTURE DIARY

First batch of “Choi Sum” - July 27 2017 First serving of “Choi Sum” for

• ur Eco Café

OFFICIAL LAUNCH –Thursday 24th Aug 2018

Great turn out with members and local community. Depute Provost cutting the ribbon and declared our project “SEED TO WOK”

• fficially

ECO CAFE

Authentic Chinese snacks freshly prepared by pour project workers in our Eco Café frequented by our members young and old and local community for lunch and even booking for birthday lunch

PICTURE DIARY

Dragon Boat Festival- Dumplings making One of our senior member passing on the skill of dumpling making to other Association members and add dumpling to our Eco Café Menu

ECO GREENHOUSE - PICTURE DIARY

ECO GREENHOUSE - PICTURE DIARY

Part of our Climate Challenge "Seed to Wok" project we have built an Eco Greenhouse using timer frame with recycling 1 or 2 litres plastic bottles for the panel instead of

• glass. Our Gardener

Thomas Lacroix finished putting the frame up, all we need now are plenty of 1 or 2 litres plastic bottles! We have put a white sack

COMMUNITY COMPOST COLLECTION POINT

To encourage our members to start composting, we have installed a compost collection box at the bottom of our community garden so as to enable our members and local community to drop their vegetable peelings and garden waste which will eventually be used in our community garden raised beds where we grow our Chinese vegetables.

HOME ENERGY EFFICIENCY

Working in partnership with Dean the Home Energy Scotland Officer. Followed up from the energy efficiency awareness workshop we visited 16 members’ home carried

• ut home energy checks,

recommended energy efficiency advice and successfully referred 2 members to Warmer Home for free home energy upgrade/

LOTUS BLOSSOM ECO CAFE

Due to popular demand from 2nd April extending our

• pening times to

Monday – Saturday between 12-3pm

The Eco Café Team. Ling Chen our chef produces homemade authentic Chinese snacks while the other project workers talk to café visitors to raise awareness to our Climate Challenge grow project and Eco Café We hold monthly Chinese cooking demo sessions to promote healthy eating

LOTUS BLOSSOM ECO CAFE

New Spring Menu starting Monday 2nd April

COMMUNITY TUCK SHOP

We place orders each week in bulk with our Chinese whole sale supplier for our members and also the wider community to enable them to purchase cooking ingredients and food stuff without travelling long distance in turn reduce the Carbon Footprint.

FARESHARE FOOD CONNECTION

As part of our SEED TO WOK project SHIMCA has signed up as a distributor with FareShare. We help distribute surplus food from Tesco Store to low income families in Inverness registered with SHIMCA. This will in turn help to reduce food waste.

ECAR COMMUNITY TRANSPORT SERVICE

With the Highland Council Community Transport Grant we are able to provide a car share / pick up service. This is made possible for our elderly members as well as young families without own transport to attend evening and weekend activities

• therwise impossible for them as public

transports are unavailable in the evening and weekend from rural towns. Not only our members benefit form this service we are able to help toward reducing carbon footprint too.

www.climatechallengefund.org

SHIMCA will not be funded by the Scottish Government Climate Challenge Fund beyond 31st March 2018 however we are determined to continue where we have started with the “ SEED TO WOK” project . In terms of the grow project we will be continuing to grow Chinese vegetables to be used in our Eco Café . We will also continue to work with the 2 local Eco Green Flag Schools to share the necessary skills in growing and the knowledge about the health benefits of Chinese vegetables. We are in the process of turning the Eco Café into a Social Enterprise so that we can continue the promotion of

On behalf of our Trustee we would like to convey our gratitude and thanks to all of your continued support to the Association aims and objectives and look forward to welcoming you all to our ECO CAFÉ and Community Garden in the years to come!

74

www.climatechallengefund .org

Thank you

Shimca www.shimca.weebly.co m Shimca.org.uk@gmail.co m

ILC – Cares Conference

• Charity Status since 2006
• Purchased West Hurlet House in 2012
• Serving the communities in Glasgow in South West

ILC – Cares Conference

Charity Status since 2006

ILC – Cares Conference

• Attended Local Energy Scotland (LES) workshop in Jan 2019
• Initiated Resource Efficient Scotland Report
• Worked with LES for application to extend OFGEM FIT